<div id="promoscontent" style="height: 500px;">
<div id="myPromos" class="contentColumn" >

<?php
echo "my promos";

?>
</div>
<div id="activePromos" class="contentColumn" >
<?php 

echo "active promos";

?>
</div>
<div id="latestPromos" class="contentColumn"  >
<?php 
echo "latest promos";
?>
</div>
</div>